Abstract:
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This work analyses the validity of the RVoG model as-
sumption in case of PolInSAR data in forestry analy-
sis. In order to assure that the interferometric coherence
describes a line, as imposed by the RVoG model, the
normalized PolInSAR coherency matrix must be affine
equivalent to an Hermitian matrix. On the basis of this
observation, two tests for the RVoG model hypothesis are
proposed. A test based on the analysis of the coherence
region shape, and a test based on a Maximum Likelihood
approach, on the basis of the zero mean, complex, Gaus-
sian distribution. Preliminary results would indicate a
larger validity of the model at P-band over L-band and,
in case of Tropical forests. |